Mechanical movement.



C. F. KNOWLTON & F. F. ELLIOT.

MECHANICAL MOVEMENT.

APPLICATION FILED MAR. 30, 1909.

Patented June 11, 1912.

3 SHEETSSHEET 1.

COLUMBIA PLANOGRAPH c0.. WASHINGTON, n. c.

G. F. KNOWLTON & F. F. ELLIOT.

MECHANICAL MOVEMENT.

APPLICATION FILED MAR. 30, 1909.

Patented June 11, 1912.

3 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH co., WASHINGTON, n. c.

G. F. KNOWLTON & F. F. ELLIOT.

MECHANICAL MOVEMENT.

APPLIGATION FILED MAR. 30, 1909 Patented June 11, 1912.

3 SHEETS-SHEET 3.

COLUMBIA PUNOGIIAPM CO WASHING'lON, n. c.

UNITED STATES PATENT OFFICE.

CHARLES F. KNOWLTON, OF PITTSBURGH, AND FRANK F. ELLIOT, OF BOSSTOWNSHIP,

ALLEGHENY COUNTY, PENNSYLVANIA, ASSIGNORS TO THE OSBORN MANUFAC- TUBINGCOMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented June 11, 1912.

T 0 all whom "it may concern:

Be it known that we, CHARLES F. KNOWL- TON and FRANK F. ELLIOT, citizensof the United States, residing at Pittsburgh, N. S., and Ross township,respectively, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in Mechanical l\Iovements,of which the following is a specification, reference being had thereinto the accompanying drawing.

Our invention consists of an improvement in mechanical movements.

The apparatus is particularly designed for use in molding machines andhas for its object to provide means for withdrawing the patterndownwardly from the flask which will effect the vertical movement ofpatterns of excessive length by operating mechanism of compactconstruction, so designed as to impart continuous movement to thepattern carrier and pattern for the full length of the draw with arelatively shorter crank travel, through operating and connectingelements, and by the apparatus hereinafter more fully described.

In molding apparatus it is desirable that the pattern shall be steadilyand continuously drawn from the flask, and for economy of space andcontinuous direct application of the power, the drawing mechanism shallbe as compact as possible. These objects are secured in our invention.

Referring to the drawings :Figure 1 is a view in front elevation of amachine embodying the invention, the pattern plate being shown at itsuppermost position. Fig. 2 is a similar view in side elevation partly insection, centrally through Fig. 1, on the line II. II. thereof. Fig. 3is a horizontal sectional view on the line III. III. of Fig. 2. Figs. 4to 8 inclusive, are diagrammatic detail .views of the operativemechanism for continuously lowering the pattern plate and its supportingframe. Fig. 9 is a detail view in perspective of the multiplying cranklink. Fig. 10 is a similar view of the controlling bearing therefor.

2 represents the main frame of the ma chine of generally rectangularform having supporting pedestals 3 at each corner, by which itissupported upon the foundation. Said frame 2 is of any suitableconstruction, adapted to support the working parts and provide a hollowinterior clearance for the vertically movable pattern carrying frame 4,indicated more in detail in Figs. 4 to 8 inclusive. Said frame 1 is alsoof rectangular skeleton form carrying at its upper end the pattern plate5 to which it is secured and which is to be drawn downwardly from withinthe mold, which is supported upon the usual stationary stripping plate 6located upwardly above and supported upon the main frame 2 in anysuitable manner.

The pattern frame 1 is slidingly mounted within suitable bearings inframe 2 of any suitable construction for maintaining it in verticalalinement with the flask supported upon the stripping plate, and islowered by links or pitmen 7, 7. Said links are pivotally secured attheir upper ends to downwardly extending lugs 8 forming a part of thepattern plate 5 or of frame 4 as desired, and at their lower ends arealso pivotally secured at 9 to the terminals 10 of the multiplying cranklink 11.

12 represents the operating shaft of the machine, mounted in suitablebearings 13 at each side, having suitable actuating mechanism, as asprocket wheel 14,'geared by sprocket chain 15 with the driving Wheel 16mounted upon shaft 17 in bearing 18 extending upwardly at one side ofthe main frame, shaft 17 being secured at its outer end to ahand-operating wheel or lever 19, of any suitable construction. By thismeans the shaft 12 and its connected mechanism is operated at anydesired speed.

If desired, shaft 12 may be operated by any other suitable means ormechanism, as by a motor geared with it from below or otherwise throughsuitable gearing.

Keyed or otherwise secured to shaft 12 each side Of the vertical centerof crank link 11, are crank arms 20, 20, which arms are pivotallysecured at 21 to the downwardly extending bifurcated terminals 22, 22,of the multiplying crank link 11, at each side of its middle annularbearing body portion 23. The center of shaft 12 is thus the pivotalcenter of cranks 20. Said middle portion 23 is of partly circular form,described from a center conforming to the center of shaft 12, andconstitutes a controlling bearing for link 11, insuring its rotationaround the center of shaft 12 during the lowering of the pattern, byengagement against the corre spondingly curved face 24 of a bracket 25extending inwardly from the frame 2, to which it is secured. That is tosay, the sectional cylindrical portion 23 of the multiply ing crank linkis in constant bearing engagement with the curved face 24 of bracket 25,during the lowering operation, whereby the said link is braced andcaused to impart a constant lowering travel to links 7 and the patternsupporting frame 4.

26 represents bearing rollers for links 7 mounted upon studs extendinginwardly from brackets 27. As crank arms 20 rotate, the pattern framebeing in the uppermost position and bearing 23 being in contact with theface 24, a centralizing journal mounting is thus provided for themultiplying crank link 11, whereby, as it is actuated by crank arms 20,it is swung around the center of shaft 12, drawing links 7 down \vardlyto the position shown in Fig. (3 of the drawings. At such position crankarms 20 will ha e made a one-half revolution from their lowermost totheir uppermost position and have reversed the multiplying crank linkunder control of the bearing 24, lowering the pattern frame and patternto the same extent of the one-half revolution of shaft 12. Furthercontinued revolution of the shaft and movement of crank arms 20 carrieslinks 7 downwardly, the multiplying crank links 11 now acting merely asa free connecting link as indicated in Fig. 7, the lower ends of links 7coming into bracing contact with rollers 26. Continued rotation of shaft12 will impart, through link 11,c0ntinuous downward travel of thepattern support, links 7 being braced by rollers 26, until the supportand pattern are dropped to their lowermost position, as indicated inFig. 8. It will be observed that such travel is exactly double that ofthe full travel of the crank arms 20 from the uppermost to the lowermostposition, and is accomplished through the operation of the multiplyingcrank link and its controlling hearing.

The weight of the pattern carrier and its parts is overbalanced bycounter-weights 28 depending by cords or flexible connections 29 passingover sheaves 30 and secured at their other ends to the lower portion ofthe frame 4 of the pattern carrier. By this arrangement, as the patternframe is lowered as above described, the weights will be raised to aposition whereby their gravity may accomplish the lifting of the patternframe, upon reversal of the rotation of shaft 12 through an entirerevolution, bringing the operating parts to their original position asshown in Fig. 4. In such raising operation, the links 7 will rideupwardly against rollers 26 and the multiplying crank link will operatein a reverse direction, finally arriving at its original position andengaging the bracket 27, the terminal of which provides a limiting stopfor the. upper end of the multiplying crank link, positively arrestingits movement and fixing the position of the parts for operation.

It will thus be seen that with the construction described, we accomplishthe full desired travel for lowering of the pattern with a crank travelof but one'half thereof and through mechanism which is compactlyassociated together within the contracted space provided. The severalparts are of simple construction, strong and well adapted for thepurpose, and insure certainty and reliability of operation.

The advantages of a molding apparatus in which the pattern may bewithdrawn for its full length by such a mechanism will be readilyappreciated by all those familiar with this class of machinery andavoids the necessity of providing space for operative mechanism thelength of travel of which is co-extensive with that of the pattern.

The invention may be changed or varied in different details or featuresof construction or its proportions may be so designed as to suit varyingconditions of use, but all such changes are to be considered as withinthe scope of the following claims.

What we claim is 1, Means for imparting motion to the moving element ofa machine consisting of a completely revoluble actuating crank having aless throw than the whole movement desired, and a link connected withthe crank and the moving element and arranged to be swung bodily aroundthe pivotal center of the crank.

2. Means for imparting motion to the moving element of a machineconsisting of a completely revoluble actuating crank having a less throwthan the whole movement desired, a link connected with the crank and themoving element, and means controlling the link whereby it is carried bythe crank around the pivotal center thereof.

3. Means for imparting motion to the moving element of a machineconsisting of a completely revoluble actuating crank, a link connectedwith the crank and moving element respectively, and means controllingthe movement of the link whereby it is bodily swung by the crank aroundthe pivotal center thereof.

4. Means for imparting motion to the crank at one of its ends and at theother to the pitman, means controlling the movement of the link wherebyit is bodily swung by the crank around the pivoted center thereof, andmeans controlling the movement of the pitman, substantially as setforth.

6. Means for imparting motion to the moving element of a machineconsisting of a. completely revoluble cranlgamultiplying crank linkhaving a part-circular bearing portion, a bearing therefor, and meansconnecting the crank link with the moving element, substantially setforth.

7. The combination with a moving element, of a shaft, a crank secured tosaid shaft and completely revolublc around the center thereof, aconnected multiplying crank link connected to said crank, meanscontrolling the rotation of said crank link around the shaft as acenter, and means connecting said link with the moving element,substantially as set forth.

8. The combination with a moving element, of a shaft, a crank secured tosaid shaft and completely revoluble around the center thereof, aconnected multiplying crank link connected to said crank, meanscontrolling the rotation of said crank link around the shaft as acenter, a connecting rod secured to the crank link and moving element,and a controlling bearing roller therefor, substantially as set forth.

9. In a machine, the combination of a frame, a vertically reciprocatingmoving element therein, counterweights for the moving clement, anactuating shaft provided with a crank, a multiplying crank linkconnected with the crank and having an annular bearing portion, astationary hearing device arranged to engage said bearing portion, andmeans connecting the crank link with the moving element, substantiallyas set forth.

10. In a machine, the combination of a frame, a vertically reciprocatingmoving element therein, counterweights for the moving element, anactuating shaft provided with a crank, a multiplying crank linkconnected with the crank and having an annular bearing portion, astationary bearing device arranged to engage said bearing portion, apitman connecting the crank link with the moving element, and acontrolling roller therefor, substantially as set forth.

11. In a machine, the combination of a frame, a vertically reciprocatingmoving element therein, counterweights for the moving element, anactuating shaft provided with a crank. a multiplying crank linkconnected with the crank and having an annular bearing portion, astationary bearing device arranged to engage said bearing portion, meansconnecting the crank link with the moving element, and means foractuating the shaft, substantially as set forth.

12. Means for imparting movement to a body consisting of a shaft and acrank having a throw less than the whole movement desired, a multiplyingcrank link having an annular bearing portion and connected at one end tothe crank, a bearing bracket arranged to engage said bearing portion,and means connecting the other end of the crank link with the body,substantially as set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.

CHARLES F. KNOVVLTON. FRANK F. ELLIOT.

\Vitnesses C. M. CLARKE, H. M. WILLIS.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. C.

